After may doubts and speculations, finally minecraft has been officially announced for Wii. Nintendo and Mojang confirmed that the game will be available in eShop on December 17.

Quote from Mojang:

"We'll be adding more content packs to Wii U Edition in the near future (Wa-hoo!), and updating the core game with free updates, just like our other platforms," Mojang added. "As a quick reminder: all DLC packs are optional. You can have significant amounts of fun playing Minecraft without spending extra cash."